Multispectral Jammer – effective against any race but weaker than the race specific versions
Magnometric Jammer – effective against Gallente
Ladar Jammer – effective against Minmatar
Radar Jammer – effective against Amarr
Gravimetric Jammer – effective against Caldari
ECM Burst – effective against any race, but high demand of capacitor

*** What should I shoot them with? ***
Guristas - Kinetic
Serpentis - Thermal
Mordus - Thermal & Kinetic
Blood - Thermal
Sansha - Thermal
Angel - Explosive
Mercenary - Thermal

** Damage types ***
Guristas - Kinetic / Thermal (weak against kinetic)
Serpentis - Thermal / Kinetic (weak against thermal)
Blood Raider - Thermal / EM (weak against EM)
Sansha's Nation - EM / Thermal (weak against EM)
Angel Cartel - Kinetic / Explosive / Thermal (weak against explosive)
Mordus Legion - Thermal / Kinetic
Minmatar Fleet - Thermal / Explosive
Amarr Navy - EM / Thermal
Gallente Navy - Explosive
Thukker Tribe - Thermal / Explosive